# A087988 (b-file synthesized from sequence entry) 1 0 2 1 3 2 4 11 5 101 6 111 7 1001 8 10001 9 10101 10 11011 11 100001 12 101101 13 110011 14 1000001 15 1001001 16 1100011 17 10000001 18 10011001 19 10100101 20 11000011 21 100000001 22 100010001 23 100101001 24 101000101 25 110000011 26 1000000001 27 1000110001